The lives of galaxies can be extended if their supermassive black holes that provide them with "hearts and lungs" to support their "breathing" and prevent them from growing too large.

Smoking can turns your lungs, black, inflated, and inflamed. But quitting can reverse some of this damage, even if you’ve smoked for several years.

“When you get a pneumonia parts of your lungs may fill up with fluid and parts that should be black or dark on an X-ray look white.” White lung pneumonia can be caused by a wide range of things.